UWD1V331MCQ1GS Equivalent & Substitute Parts

Part Overview

The UWD1V331MCQ1GS is a 330 µF, 35 V aluminum electrolytic capacitor manufactured by Nichicon in the UWD series. This surface mount radial can capacitor is designed for general purpose applications with a rated lifetime of 5000 hours at 105°C and an operating temperature range of -55°C to 105°C. The component is currently in active production status with substantial inventory availability. Equivalent and substitute parts are identified to support procurement flexibility, supply chain continuity, and design optimization across compatible applications.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	35 V
Tolerance	±20%
Lifetime @ Temperature	5000 Hrs @ 105°C
Operating Temperature Range	-55°C ~ 105°C
Polarization	Polar
Package Type	Radial, Can - SMD
Mounting Type	Surface Mount
Size / Dimension	0.394" Dia (10.00mm)
Height - Seated (Max)	0.425" (10.80mm)

Substitute Part Grouping Explanation

Substitution eligibility for the UWD1V331MCQ1GS is determined by strict equivalence across the following critical parameters:

Capacitance value: 330 µF (exact match required)
Voltage rating: 35 V (exact match required)
Tolerance: ±20% (exact match required)
Polarization: Polar (exact match required)
Package type: Radial, Can - SMD (exact match required)
Mounting type: Surface Mount (exact match required)
Physical dimensions: 0.394" diameter (10.00mm) and compatible height specifications
Lifetime rating: 5000 Hrs @ 105°C (exact match required)
Operating temperature range: -55°C ~ 105°C (exact match required)

The ATB337M035 manufactured by Cornell Dubilier / Illinois Capacitor meets all substitution criteria and is classified as a direct equivalent part.

Parameter Comparison

Parameter	UWD1V331MCQ1GS (Nichicon)	ATB337M035 (Cornell Dubilier / Illinois Capacitor)
Capacitance	330 µF	330 µF
Voltage Rating	35 V	35 V
Tolerance	±20%	±20%
Lifetime @ Temperature	5000 Hrs @ 105°C	5000 Hrs @ 105°C
Operating Temperature Range	-55°C ~ 105°C	-55°C ~ 105°C
Polarization	Polar	Polar
Package Type	Radial, Can - SMD	Radial, Can - SMD
Mounting Type	Surface Mount	Surface Mount
Size / Dimension	0.394" Dia (10.00mm)	0.394" Dia (10.00mm)
Height - Seated (Max)	0.425" (10.80mm)	0.413" (10.50mm)
Ripple Current @ 120 Hz	335 mA	595 mA
Ripple Current @ 100 kHz	670 mA	850 mA
Impedance	90 mOhms	120 mOhms
Product Status	Active	Active

Engineering Selection Recommendations

Both the UWD1V331MCQ1GS and ATB337M035 are active production components meeting identical electrical and mechanical specifications for capacitance, voltage rating, tolerance, lifetime, operating temperature range, and package configuration. The ATB337M035 demonstrates higher ripple current handling capability at both low and high frequencies, providing enhanced performance margin in applications subject to AC ripple stress. The ATB337M035 carries RoHS3 compliance, REACH unaffected status, and MSL 1 (unlimited) moisture sensitivity rating, supporting extended storage and handling flexibility. Height difference of 0.012" (0.30mm) between seated maximums is within typical PCB layout tolerance for surface mount applications. Selection between these parts should be based on supply availability, procurement lead time, and specific application ripple current requirements.

Frequently Asked Questions (FAQ)

Q: Can the ATB337M035 be used as a direct replacement for the UWD1V331MCQ1GS?

A: Yes. Both parts share identical capacitance (330 µF), voltage rating (35 V), tolerance (±20%), lifetime (5000 Hrs @ 105°C), operating temperature range (-55°C ~ 105°C), polarization (polar), package type (radial can SMD), and mounting type (surface mount). Physical dimensions are compatible within standard PCB layout tolerances.

Q: What are the differences between these two parts?

A: The ATB337M035 provides higher ripple current ratings (595 mA @ 120 Hz and 850 mA @ 100 kHz versus 335 mA and 670 mA respectively for the UWD1V331MCQ1GS). The ATB337M035 has a slightly lower seated height (0.413" versus 0.425") and higher impedance (120 mOhms versus 90 mOhms). The ATB337M035 includes RoHS3 compliance and MSL 1 moisture sensitivity rating documentation.

Q: Are there packaging differences between these parts?

A: The UWD1V331MCQ1GS is supplied in Cut Tape (CT) packaging, while the ATB337M035 is supplied in Tape & Reel (TR) packaging. Both are surface mount compatible. Packaging selection depends on production volume and assembly line requirements.

Q: Which part should be selected for high ripple current applications?

A: The ATB337M035 is suitable for applications requiring higher ripple current handling, with ratings of 595 mA @ 120 Hz and 850 mA @ 100 kHz compared to the UWD1V331MCQ1GS specifications of 335 mA and 670 mA respectively.

Q: Are both parts currently available?

A: Yes. The UWD1V331MCQ1GS has 42,300 pieces in stock, and the ATB337M035 has 25,734 pieces in stock as new original inventory.

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